Crimping machine



Ndv. 22, 1966 A. c. MARTIN ETAL CRIMPING MACHINE 7 Sheets-Sheet 2 Filed Nov. 26, 1963 FIG. 3

INVENTORS PIYDREV CZHPHR) MHRTIN b E N Wm B mhn R M C m M mm Dn W J Nov. 22, 1966 A. c. MARTIN ETAL 3,286,439

CRIMPING MACHINE Filed Nov. 26, 1963 7 SheetsSheet 5 FIGS FIG. 4

INVENTORS RIYDREu/ cznPnRy MRHTIN GRAN-r rugby R0513 By 19mm 771 H ORIVE Y6 Nov. 22, 1966 A. c. MARTIN ETAL 3,285,439

CRIMPING MACHINE Filed Nov. 26, 1963 '7 Sheets-Sheet 4 INVENTORS .HNDREV CZRPFIRY MflRTI/V GRANT MQLOY R0515 s flwwwm-m Nov. 22, 1966 A. c. MARTIN ETAL 3,286,439

CRIMPING MACHINE Filed Nov. 26, 1963 7 Sheets-Sheef 5 zmvzrwons HNDREW c1nPn/Zv MHHTIN GRANT Maoy R055 HTTORNE Y5 Nov. 22, 1966 A. c. MARTIN ETAL 3,

CRIMPING MACHINE Filed Nov. 26, 1963 7 Sheets-Sheet 6 INVENTORS PNDREM) CZHPFIRY M RT GRHNT MC0 Y R065 United States Patent 3,286,439 CRIMPING MACHINE Andrew Czapary Martin and Grant McCoy Robb, Beaupre, Quebec, Canada, assignors to Abitibi Power & Paper Company, Limited, Iroquois Falls, Ontario, Canada, a corporation of Canada Filed Nov. 26, 1963, Ser. No, 326,158 Claims priority, application Canada, Sept. 27, 1963,

885,507 a 7 Claims. (Cl. 53-380) This invention relates generally to a method and apparatus for wrapping rolls of paper and more particularly it pertains to wrapping substantially cylindrical rolls of newsprint paper.

In the paper manufacturing industry, newsprint rolls are. shipped in wrappers which are heavy sheets of kraft paper. The roll is placed on its side and the wrapper is picked up and rolled with the roll until it completely encloses it. The wrappers when applied in this manner extend beyond either end of the roll by several inches. This extension must be folded or crimped over the ends of the roll.

When rolls are wrapped for domestic shipment this crimping presents no problem. Only one sheet of wrapper is usually used and men become quite adept at crimping manually as the roll moves along the floor. However, for export shipments it is necessary to use five or six layers of wrapper which makes it diflicult to do a neat crimping job manually. It has therefore become necessary to develop a machine which would do this crimping completely automatically.

When the extended end portions of the wrapper are crimper, they are formed into a succession of folds or crimps which are then pressed against the end surfaces of the roll. Each crimp slightly overlaps with the neighbouring formed crimp. The wrapper is held in place by heavy kraft paper discs called heads, which are glued in place on the ends of the roll, over the wrapper.

Originally this crimping operation was all done manually but lately various machines have been designed in an attempt to perform this wrapping operation mechanically. The operation of these machines still requires that some crimps be made in the wrapper manually before the newsprint r-oll could be placed in position on the machine for completion of the crimping operation by the machine. These crimps which were made manually were seldom in proper register with the crimps made by the machine and as a result, were frequently torn or damaged by the machine.

The object of the present invention is to provide a method and apparatus which Will function automatically to crimp the ends of the wrapper which extend beyond either end of the paper roll.

Another object of the invention is to provide a method and an apparatus to produce a machine-made first crimp in the wrapper of a paper roll on a crimping machine operating with rotating crimping blocks.

A further object of this invention is to crimp the ends of the wrapping paper with a crimping apparatus without damaging or tearing the crimps by the apparatus.

Another object of this invention is to provide a method andan apparatus to completely crimp the ends of the wrapper with a machine and thus eliminate the necessity of making any first crimps manually.

The foregoing objects are achieved in accordance with this invention by providing a crimping apparatus for crimping the ends 'of the wrapper of the paper roll which comprises a pair of drive rolls adapted to rotate and support the roll of paper during the crimping operation. A pair of sleeves are slidably and rotatably mounted on one of the drive rolls. Each of the sleeves contains crimper blocks adapted to crimp the ends of the wrapper ice surrounding the paper roll. A means is provided for operating the crimper blocks independently of each other. A roll sensing means is linked with each of the sleeves and adapted to move in unison with the crimper blocks. A means is provided for lowering the paper roll to the drive rolls and ejecting the paper roll from the drive rolls once the crimping operation has been completed.

The invention is illustrated, by way of example, in the accompanying drawings in which:

FIGURE 1 is a plan view of the crimping machine in accordance with the present invention;

FIGURE 2 is a side elevational view taken along the line 22 of FIGURE 1, and shows the wrapper of a roll of paper in crimping position on the crimping machine;

FIGURE 3 is a cross-sectional view taken along the line 33 on FIGURE 2;

FIGURE 4 is a side elevational view of the sensing means used in accordance with this invention;

FIGURE 5 is an end elevational view of the sensing means shown in FIGURE 4;

FIGURES 6(a) and 6(b) are schematic diagrams of the electrical circuit for the automatic. crimping machine. FIGURE 6(b) is a continuation of FIGURE 6(a);

FIGURE 7 is a schematic diagram illustrating the crimper kick-off air supply;

FIGURE 8 is a schematic diagram illustrating the air supply system and the electrical circuit for the crimping blocks; and

FIGURE 9 is a schematic diagram illustrating electrical circuit use in the operation of the crimping machine.

Referring now to the drawings, the crimping apparatus, designed generally by the numeral 201 is mounted' on longitudinal beams 202 joined together by transverse beams 203 below the level of the floor 204 of the paper mill. The crimping apparatus 201' includes two drive rolls 205 and 206 in spaced parallel relationship which are rotatably mounted in bearings 209. Drive roll 205 is driven by motor 208 through gears 207. Drive roll 206 is driven in unison with and in the same direction as drive roll 205 by a chain drive 210 attached to sprocket 211a and 211k on drive rolls 205 and 206 respectively.

A kick-off roller 212 is positioned between rolls 205 and 206. The kick-oft roller 212 which is operated by kick-01f air cylinder 213 serves to lower paper roll 215 onto the drive rolls 205 and 206 and then to eject the paper I011 215 once the ends 217 of the wrapper 218 have been crimped.

A sleeve 221 is slideably mounted on each end of drive roll 206. The sleeves 221 are operatively connected to crimper air cylinders 222 so that they move the sleeves 221 in and out on drive roll 206and can be adapted to rotate with it. Each sleeve 221 has a large radially extending flange 224 to which crimping :blocks 225 are attached. A collar 226 is secured to the circumference of the sleeve 221.

A framework 235 is supported on longitudinal beam 202 between each end of the drive rolls 205 and 206. Each framework 235 comprises vertical supports 236 and 237 joined together by longitudinal bars 238 and 239 which are parallel to beam 202. A carriage plate 240 is slidably mounted on bars 238 and 239. A crimping disc follower 241 is integrally mounted on plate 240 so that the follower 241 engages collar 226 of sleeve 221.

Sensing arm 242 is pivotally connected by pin 243 to carriage plate 240 and is resiliently held in position by spring 244. The top end 245 of sensing. arms 242 is adapted to receive the holding arm 246 of sensing head 247. Sensing heads 247 may be formed of hardwood, metal or any other suitable material. Sensing arms 242 are resiliently held in position so that if the sensing heads 247 should strike the ends of the paper roll 215 with a greater force than planned, the shock will be cushioned and thus avoid any damage to the machine. Sensing heads 247 are used for two purposes. Firstly, the sensing heads 247 are used in such a manner to tell the electrical system of the machine when the crimping blocks 225 are approaching the ends of the paper roll 215 so that the forward movement of the blocks 225 is stopped. Secondly, the sensing arms are used to hold the paper head in place over the end of the paper roll 215 while the ends 217 of the wrapper 218 are being crimped.

Referring now in particular to FIGURES 6(a) and 6(b) the details of the electrical system of the crimping device will be described. In describing the circuitry of the system all the terminals are electrically connected.

The manual control box 100 contains two momentary type, normally open push button switches 61 and 62. Switch 61 is known as the Lower Switch and when pushed lowers kick-off roller 212. Switch 62 is called the First Crimp Switch and when pushed starts the crimping device in operation and moves the crimping blocks 225 from the position D to position E as shown in FIGURE 2.

A second manual control box 101 contains three momentary type, normally open push-button switches 63, 64 and 65. Switch 63 known as Crimpers IN switch when operated moves the crimping block 225 from position E to position F, as shown in FIGURE 2 and starts the crimping device in operation. Switch 64 known as the Crimper OUT Switch when pushed causes the crimping block 225 to return to their original position D. Switch 65 known as the kick-off switch when pushed raises the kick-ofl roller 212.

Selector control box 102 contains a pilot light 66, a 3- position, rotary type, selector switch 57, one momentary type, normally open push-button switch 68 and one maintained type normally closed push-button switch 69. Selector switch 67 is used to set the machine for manual or automatic operation. Switch 68 is used to start the machine when it is on automatic operation. Switch 69 is used for an emergency stop in case trouble is encountered in operation of the machine.

Power from a 550 volt, 60 cyele source is supplied through a three-wire cable connected from terminals K, L and M of a 3-phase main power supply fused switch 103 to terminals 55, 45 and 46 of contacts M1 M1 and MI in 3-phase starter box 104. A three-wire cable is connected from terminals .MTl, MT2, and MT3 in starter box 104 to the terminals of 3-phase driving motor 208. Starter-box 104 contains a coil M1, contacts L1 and 0L2 which are joined together in series.

In the manual control box 100. terminal'l of lower push button switch 61 is. connected to terminal 2 of the first crimp push-button switch 62. Terminal 2 of the first crimp push-button switch 62 is connected to terminal 3 of relay 105. Terminal 4. of first crimp pushbutton switch 62 is connected to terminal 5 of limit switch terminal block 106. Terminal 6 of lower pushbutton switch 61 is connected to terminal 7 of multi-cam timing switch 107.

Terminals 8 and 9 of pilot light 66 'of selector control box 102 are connected to terminals 10 and 11 respectively of push-button terminal block 108.

Terminal 12 of selector switch 67 is connected to terminal 13 of relay 109. Terminals 14 and 14a of selector switch 67 are joined together and terminal 14a is also connected to terminal 14b of the start push-button switch 68. Terminal 15 of selector switch 67 is connected to terminal 16 of push-button terminal block 108. Terminal 17 of start push-button switch 68 is joined to terminal 17a of emergency stop push-button switch 69. Terminal 17 of start push-button switch 68 is also connected to terminal 18 of kick-off push-button switch 65. Terminal 17a of emergency stop push-button switch 69 is connected to terminal 19 of contact TI of multi-cam timing switch 107. Terminal 17b of emergency stop push-button switch 69 is connected to upper terminal 20 of control fuse block 110.

Terminals 18 and 18a of kick-off push-button switch 65 and crimper out push-button switch 64 respectively are joined together and terminal 18a of crimper out push-button switch 64 is also joined to terminal 18b of crimper in push-button switch 63. The second terminal of crimper in push-button switch 63 is joined to terminal 21 of push-button terminal block 108. The second terminal 18d of crimper out push-button switch 64 is joined to terminal 22 of push-button terminal block 108. The second terminal 18e of kick-off push-button switch is connected to terminal 23 of push-button terminal block 108.

Kick-off solenoid S3 is connected to starter box 104 by joining terminal 24 of kick-off solenoid S3 to terminal 25 of starter box 104. The terminal 24 is also connected to terminal 25 of crimper in solenoid S1. The second terminal 24a of kick-olf solenoid S3 is connected to terminal 23 of push-button terminal block 108.

Terminal 25a of crimpers in solenoid S1 is connected to terminal 21 of push-button terminal block 108. Crimpers in solenoid S1 are joined to crimpers in solenoid S2 by connecting terminals 25 and 26. Terminal 26a of crimpers out solenoid S2 is connected to terminal 22 of push-button terminal block 108.

Terminals .27 and 27a of kick-off lower solenoid S4 is connectedto terminals 5d and 50 respectively of limit switch terminal block 106.

Terminals 28 and 28a of first crimp solenoid S5 are connected to terminals 5d and 5b respectively of limit switch terminal block 106.

Terminals 29 and 29a of first crimp solenoid S6 are connected to terminals 5d and 5a respectively of limit switch terminal block 106.

Terminal 30 of crimping disc positioner limit switch LS1 is connected to terminal 16 of push button terminal block 108. The second terminal 30a of crimping disc positioner limit switch LS1 is connected to terminal 7a of contact'T6 of multi-cam timing switch 107.

Terminals 31 and 31a of first crimp limit switch LS2 are connected to terminals 5 and 5b respectively of limit switch terminal block 106.

Terminals 32 and 32a of first crimp limit switch LS3 are connected to terminals 5 and 5a respectively of limit switch terminal block 106.

Terminals 33 and 33a of first crimp release switch LS4 are connected to terminals 5 and 5e respectively of limit switch terminal block 106.

Terminal 5d of limit switch terminal block 106 is connected to terminal 11 of push-button terminal block Terminals 5d, 5 and 5e of limit switch terminal block 106 are connected to terminals 3a, 3b and 3d respectively of relay 105.

Terminal 5c of limit switch terminal block 106 is connected to terminal 7 of multi-cam timing switch 107.

Terminals 11 and 16 of push-button terminal block 108 are connected to terminals 25 and 34 respectively of starter box 104.

Terminals 11, 10, 21, 16 and 22 of push-button terminal block 108 are connected to terminals 35, 7 72, 7d and 7c respectively of multi-cam timing switch 107.

Terminal 11 of push-button terminal block 108 is connected to terminal 36 of cotrol transformer 111.

Terminal 10 of push-button terminal block 108 is connected to terminal 37 of relay 109.

In the multi-cam timing switch 107 terminals '35 and 38 of TM coil are connected to terminals 40 and 39 respectively of C coil and terminal 38 is also connected to terminal 7] of contact T1.

Terminal 7a of multi-cam timing switch 107 is connected to terminal 7i of multi-cam timing switch 107.

Terminals 7g, 7h, and 71' of multi-cam timing switch 107 are connected together in series. Terminals 19 and 7g of multi-cam timing switch 107 are connected to terminals 37a and 371) respectively of relay 109.

In relay 109 terminal 13 of coil CR1 and terminal 370 of contact CR1 are connected; Terminal 13a of relay 109 is connected to terminal 36 of control transformer 111. Relay 109 is joined to relay 105 by connecting terminal 37a of relay 109 with terminal 3 of relay 105. Contacts CR2 and CR2 of relay 105 are joined together by connecting terminals 3 and 3f.

Terminal 42 of control transformer 111 is connected to the lower terminal 43 of fuse block 110.

Terminals 43 and. 44 ofcontrol transformer 111 are connected to terminals 46 and 45 respectively of starter box 104.

In starter box 104 terminal 50 of contact M1 is connected to terminal 57 of thermal. element TE1; terminal 51 of contact M1 is connected to MT and terminal 52 of contact M1 is connected to terminal 53 of thermal element TE2.

Control transformer 111 consists, of a single phase step down control transformer suitable for connecting a 550 volt, 60 cycle single-phase power supply to 110 volts, 60 cycles.

Limit switches LS1, LS2, LS3 and. LS4 are preferably single pole, single-throw micro switches.

The operation of the crimping machine'will now be described in relation to the diagrams.

As shown inFIGURE 3, the paper roll 215 is approaching the crimping machine from the right hand side. At this stage the wrapper 218 has been applied around the circumference of the paper roll. with the ends 217 of the wrapper 218 extending beyond the end of the paper roll 215. As the paper roll 215 approaches the crimping machine the kick-off push-button switch 65 is pressed, energizing solenoid. S3. Solenoid S3 moves valve V1 so as to feed air to the bottom of the kick-off cylinder 213. This raises the kick-off roller 212 from position 212a to position 21211. When the kick-off roller 212 is in raised position 2122: the paper roll strikes the kick-01f roller and comes to rest between the hump 260 and kick-oil roller 212.

The first crimp push-button switch 62 is then pressed which closes relay CR2. This closes at the same time contacts CR2 and CR2 Contact CR2 is a holding contact for relay coil CR2 through normally-closed first crimp release limit switch LS4. The closing of contact CR2 energized solenoid S1 which adjusts valve V4 so as to feed air through the two solenoid valves V2 and V3 to the crimper air cylinders 222. The crimper blocks 225 are moved inwards towards the paper roll 215 by the crimper air cylinder 222. As the sensing heads 247 are linked to the crimping blocks 225 by sleeve 221 they move with the crimping blocks 225.

When the sensing heads 247 touch the ends of the paper roll 215 the limit switches LS2 and LS3 due to their position on the sensing heads 247 close their contacts and energize the solenoids S5 and S6. The solenoids S5 and S6 adjust valves V2 and V3 so as to remove the air pressure from the cylinder 222 which allows the crimper blocks 225 to come to rest in position E just clear of the ends of the paper roll 215. It should be noted that when either sensing head touches the ends of the paper roll 215 it closes the contact of its respective limit switch stopping the crimping discs connected to it. As a result of this movement each crimping disc moves individually and if one head strikes the end of the paper roll before the other, the other continues until it strikes the end of the paper roll.

The lower push-button switch 61 is pressed which energized solenoid S4. This in turn adjusts valve V1 so as to feed air to the upper part of the kick-oil? air cylinder 213 which lowers the kick-off roller 212 to position 212A. When the kick-off roller 212 is lowered the paper roll 215 is no longer supported by the roller 212 and moves onto the drive rolls 205 and 206 by gravity.

As the paper roll moves down onto thedrive rolls 205 and 206, it passes between the crimping blocks 225 which catch the ends 217 of the wrapper 218 and fold it over the ends of the paper roll 215, making the first crimp. When the paper roll 215 moves into position on the drive rolls 205 and 206 it opens normally-closed limit switch LS4, cutting out CR2 relay and at the same time opening contacts CR2 and CR2 This de-energizes solenoids S1, S5 and S6. The de-energizing of solenoids S5 and S6 adjusts valves V2 and V3 so as to again apply air pressure to crimper cylinders 222. However, the deenergizing of solenoid S1 allows valve V4 to move to the neutral position, preventing air from actually reaching the cylinders 222.

The selector switch 67 is placed on auto and the start push-button switch 68 is pressed which energizes relay coil CR1 and closes at the same time contacts CRl and CR1 The closing of CRl cont-act starts timer motor TM which closes all the contacts of multicam timing switch 107 inthe following sequence:

(a) T1 contact closes first, keeping the time motor'running and the relay coil CR1 is energized through CR1 contact during the full timer cycle. The timer cycle is approximately 3 0 seconds.

(b) T6 contact close-s, energizing solenoid S4, holding valve V1 in position to supply air pressure to the upper part of kick-01f cylinder 213. This holds kick-off roller 212 in a position 212A.

(c) T3 contact closes and starts the main drive motor 208 turning the two drive rolls 205 and 206.

((1) T2 contact closes at the same time as T3 above, and energizes solenoid S1, which operates valve V4 so as to feed air through valves V2 and V3 to the crimper air cylinder 222. The crimper blocks 225 are then moved by the air cylinder 222 from their position at the edge of the ends 217 of the wrapper 218 to a position so that the crimper blocks 225 are forced against the end-s of the paper roll 215. The crimper blocks 225 rotate with the drive rolls 205 and 206 crimping the ends 217 of wrapper 218 around the paper roll 215.

(e) T4 contact closes and energizes solenoid S which operates valve V4 so as to reverse the flow of air to the crimper air cylinders 222. This moves the crimper blocks 225' back out to their original position. This finishes the crimping operation.

(f) T3 contact opens and stops the rotation of the drive rolls 205 and 206 and the crimping blocks 225. A limit switch LS1 has been provided to keep the rolls 205 and 206 and the crimping discs 225 rotating until the crimping blocks 225 are in the proper position to make the =first criimp on the next roll of paper. The limit switch LS1 is operated by a 4-lobe cam 255 bolted to the drive roll 206. The position of the cam 255 in relation to the crimping blocks 225 is adjusted so that the blocks 225 always stop in the same position.

(g) T1 contact opens after the completion of the timer cycle. The opening of this contact stops the timer motor (TM) and de-energized relay CR1.

In the final step of the position of the crimping machine, the operator presses the kick-off push-button switch 65 which energizes solenoid S3. This moves valve V1 so as to admit .air to the lower section of the kickofi cylinder 213 which naises the kick-off cylinder 212 \from position 212A to 212B. As the kick-off roller 212 is raised, it ejects the fully crimped roll from the crimping machine 201.

We claalm:

1. A crimping machine for crimping the ends of the wrapper on a paper roll comprising a pair of drive rolls adapted to rotate 'and support .a roll of paper during the crimping operation, a pair of sleeves slidiably and rotatably mounted on one of said drive rolls, each of said sleeves containing crimper blocks adapted to crimp the ends of a wrapper surrounding the paper roll, means for operating said sleeves independently of each other,

a roll sensing means linked with each sleeve and adapted to move in unison with said sleeves, and means for lowering said paper roll onto said drive rolls and ejecting said paper roll from the said drive rolls once the crimping operation has been completed.

2. A crimping machine for crimping the ends of wrapper on a paper roll comprising a pair of drive rolls adapted to rotate and support a roll of paper during the crimping operation, a pair of sleeves slidably and rotatably mounted on one of said drive rolls, each of said sleeves containing crimper blocks adapted to crimp the ends of the wrapper surrounding the paper roll, a crimper air cylinder attached to each sleeve and adapted to slide said sleeves in and out independently of each other, a sensing head linked with each sleeve and adapted to move in unison with said sleeves, and means for lowering said paper roll onto said drive (rolls and ejecting said paper roll from the said drive rolls once the crimping operation has been completed.

3. A crimping machine for crimping the ends of the wrapper on a paper roll comprising a pair of drive rolls adapted to rotate and support a roll of paper during the crimping operation, a pair of sleeves slidably and rotatably mounted on one of said drive rolls, each of said sleeves containing crimper blocks adapted to crimp the ends of a wrapper surrounding the paper roll, a crimper air cylinder attached to each sleeve and adapted to slide said sleeve in and out independently of each other, a solenoid valve operatively connected to each crimper cylinder so that said valve activates said crimper air cylinder, a sensing head linked with each sleeeve and adapted to move in unison with said sleeves, and means for lowering said paper roll onto said drive rolls and ejecting said paper roll from the said drive rolls once the cnimping operation has been compete-d.

4. A crimping machine for crimping the ends of wrapper on a paper roll comprising a pair of drive rolls adapted to rotate and support a roll of paper during the crimping operation, a pair of sleeves slidably and rotatably mounted on one of said drive lrolls, each of said sleeves containing crimper blocks adapted to crimp the ends of the Wrapper surrounding the paper roll, a crimper air cylinder attached to each sleeve and adapted to slide said sleeve in and out independently of each other, a solenoid valve operatively connected to each crimper cylinder so that said valve activates said crimper air cylinder, a sensing head linked with each sleeve and adapted to move in unison with said sleeves, said sensing head containing a switch adapted to signal said solenoid valve when said sensing head touches the end of the paper roll and stop the inward motion of said crimper blocks, and means for lowering said paper roll onto said drive rolls and ejecting said paper roll 'from the said drive rolls once the crimping operation has been completed.

5. A crimping machine for crimping the ends of the wrapper on a paper roll comprising a pair of drive rolls adapted to rotate and support a roll of paper during the crimping operation, :a pair of sleeves slidably and rotiatabl-y mounted on one of said drive rolls, each of said sleeves containing crimper blocks adapted to crimp the ends of a wrapper surrounding the paper roll, a crimper air cylinder attached to each sleeve and adapted to slide said sleeve in and out independently of each other, a solenoid valve operatively connected to each crimper cylinder so that said valve activates said crimper air cylinder, a sensing head linked with each sleeve and adapted to move in unison with said sleeves, said sensing head containing a switch adapted to signal said solenoid valve when said sensing head touches the end of the paper roll :and stop the inward motion of said crimper blocks, and means for lowering said paper roll onto said drive rolls and ejecting said paper roll firom the said drive rolls once the crimping operation has been completed.

6. A crimping machine according to claim 4 in which said switch in a micro switch.

7. A crimping machine according to claim 3 in which said means for lowering and ejecting the paper roll is a kick-off roller which is operated by a kick-off air cylinder.

References Cited by the Examiner UNITED STATES PATENTS 2,803,935 8/1957 Gibson 53380 2,904,946 9/ 1959 Ullstrom et al 5 3380 3,139,716 7/1964 Trumbull 53380 TRAVIS S. McGEI-IEE, Primary Examiner. 

1. A CRIMPING MACHINE FOR CRIMPING THE ENDS OF THE WRAPPER ON A PAPER ROLL COMPRISING A PAIR OF DRIVE ROLLS ADAPTED TO ROTATE AND SUPPORT A ROLL OF PAPER DURING THE CRIMPING OPERATION, A PAIR OF SLEEVES SLIDABLY AND ROTATABLY MOUNTED ON ONE OF SAID DRIVE ROLLS, EACH OF SAID SLEEVES CONTAINING CRIMPER BLOCKS ADAPTED TO CRIMP THE ENDS OF A WRAPPER SURROUNDING THE PAPER ROLL, MEANS 